CN112138255A - Mouth-opening-preventing noninvasive ventilator mask and using method thereof - Google Patents
Mouth-opening-preventing noninvasive ventilator mask and using method thereof Download PDFInfo
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- CN112138255A CN112138255A CN202011215481.XA CN202011215481A CN112138255A CN 112138255 A CN112138255 A CN 112138255A CN 202011215481 A CN202011215481 A CN 202011215481A CN 112138255 A CN112138255 A CN 112138255A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 210000001061 forehead Anatomy 0.000 claims abstract description 15
- 210000004556 brain Anatomy 0.000 claims abstract description 4
- 210000003128 head Anatomy 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 6
- 210000000056 organ Anatomy 0.000 claims description 4
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 210000004373 mandible Anatomy 0.000 abstract description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 5
- 206010011985 Decubitus ulcer Diseases 0.000 abstract description 3
- 208000004210 Pressure Ulcer Diseases 0.000 abstract description 3
- 230000001815 facial effect Effects 0.000 abstract description 2
- 210000000214 mouth Anatomy 0.000 description 7
- 206010003497 Asphyxia Diseases 0.000 description 1
- 208000001705 Mouth breathing Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0605—Means for improving the adaptation of the mask to the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0605—Means for improving the adaptation of the mask to the patient
- A61M16/0633—Means for improving the adaptation of the mask to the patient with forehead support
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0683—Holding devices therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0683—Holding devices therefor
- A61M16/0694—Chin straps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3327—Measuring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses an anti-mouth-opening noninvasive ventilator mask, which comprises a mask body and a 3D hollowed-out headgear, and comprises a pair of left and right cheek wrapping belts, a pair of left and right herringbone wrapping belts and a mandible supporting belt, wherein the cheek wrapping belts are respectively arranged on two sides of the mask body and are connected with fixing belts by adopting a detachable structure, and the upper ends of the cheek wrapping belts are respectively provided with a forehead extension belt and are mutually connected with the forehead position of a wearer; the herringbone wrapping belt and the cheek wrapping belt are connected into a whole and are mutually connected behind the brain of a wearer through the magic tapes, and the lower jaw supporting belt is used for supporting and fixing the lower jaw of the wearer. The invention also discloses a use method of the mouth-opening-preventing noninvasive ventilator mask. Adopt 3D fretwork headgear, its distinctive lower jaw of accessible holds in the palm the area, can fix patient's lower jaw, prevents that it from opening a mouthful breathing, and can reduce facial pressure sore.
Description
Technical Field
The invention belongs to a respirator mask, and particularly relates to an anti-mouth-opening noninvasive respirator mask and a using method thereof.
Background
At present, BiPAP breathing machine masks on the market are all matched with head sleeves, and the head sleeves are generally formed by simple upper and lower fixing belts which surround the head and face respectively. When the patient is using, for avoiding face guard gas leakage, need tighten up headgear fixed band as far as possible often, cause the too big and arouse of patient's lower jaw pressure-bearing to open one's mouth breathing like this to can lead to the breathing machine to inflate gaseous esophagus by oral cavity entering, finally cause patient's belly flatulence, serious person causes dangers such as vomiting, asphyxia. Meanwhile, by adopting the head cover, the pressure of the mask on the face can be increased by tightening the head cover, and the face can be easily pressed with sores.
Disclosure of Invention
The invention aims to provide an anti-mouth-opening noninvasive ventilator mask and a using method thereof, which can prevent a patient from breathing by opening the mouth and reduce facial pressure sores.
In order to solve the technical problems, the invention adopts the following technical scheme:
on the one hand, prevent opening noninvasive ventilator face guard of mouth, including the face guard body, the upper and lower both sides of face guard body are equipped with fixed band, its characterized in that respectively: the three-dimensional face mask comprises a mask body, and is characterized by further comprising a 3D hollowed-out headgear, wherein the 3D hollowed-out headgear comprises a pair of left and right cheek wrapping belts, a pair of left and right herringbone wrapping belts and a lower jaw supporting belt, the left and right cheek wrapping belts are respectively arranged on two sides of the mask body and are connected with fixing belts on the upper side and the lower side of the mask body in a detachable structure, forehead top extension belts are respectively arranged at the upper ends of the left and right cheek wrapping belts, matched magic tapes are arranged on the forehead top extension belts, and the left and right cheek wrapping belts are mutually connected to the forehead position of a wearer through the forehead top extension belts; the forked ends of the left herringbone wrapping belt and the right herringbone wrapping belt are respectively connected with the upper end and the lower end of the cheek wrapping belt on the same side into a whole, the other ends of the left herringbone wrapping belt and the right herringbone wrapping belt are provided with matched magic tapes, the left herringbone wrapping belt and the right herringbone wrapping belt are mutually connected behind the brain of a wearer through the magic tapes, and the two ends of the lower jaw supporting belt are respectively connected to the connecting positions of the cheek wrapping belt on the same side and the herringbone wrapping belt and form a whole.
The cheek wrapping belt, the herringbone wrapping belt and the lower jaw supporting belt are all made of elastic breathable fabrics.
The inner surfaces of the cheek wrapping band, the herringbone wrapping band and the lower jaw supporting band are also provided with a skin-friendly fabric layer.
Still be equipped with on the mandibular supporting band and survey the layering, a cheek parcel area upper end still is equipped with the control box with the junction in homonymy chevron shape parcel area including power supply battery, shift knob, microprocessor, LED display lamp and bee calling organ, and microprocessor receives the detected signal who surveys the layering and sends corresponding signal to LED display lamp and bee calling organ, and shift knob controls opening of power supply battery power supply and stops.
In another aspect, a method of using a mouth-opening prevention noninvasive ventilator mask includes the steps of:
A. selecting a 3D hollow head cover with a corresponding size according to a wearer, and assembling the 3D hollow head cover and the mask body together through a detachable structure;
B. the mask body is worn by a wearer, the 3D hollow head cover is sleeved on the head of the patient, and the lower jaw of the wearer is wrapped by the lower jaw supporting belt;
C. after the mask is adjusted, the left cheek wrapping belt, the right cheek wrapping belt, the left herringbone wrapping belt and the right herringbone wrapping belt are mutually buckled and fixed.
Further comprising the step of D: and when the measured pressure is greater than the initial pressure measurement value or a set pressure value, the microprocessor sends corresponding signals to the LED display lamp and the buzzer so as to alarm the mouth opening of the wearer.
The mouth-opening-preventing noninvasive ventilator mask and the use method thereof have the following advantages:
1. the 3D hollow head cover is adopted, and the lower jaw of a patient can be fixed through a special lower jaw supporting belt, so that mouth opening breathing of the patient is prevented;
2. the 3D hollow headgear is adopted, the original line contact with the face is changed into face contact, the 3D hollow structure is worn more in a fitting manner, the stress is more uniform, the wearing comfort of a patient is effectively improved, and the incidence rate of pressure sores on the face is reduced;
3. the 3D hollow-out headgear is made of the elastic breathable fabric and the inner layer of the skin-friendly fabric, so that the wearing comfort can be further improved;
4. the pressure of the lower jaw of the patient can be monitored in real time by the arrangement of the measuring and pressing bar, so that the function of automatically monitoring the mouth opening of the patient is achieved, and an alarm can be sent in time to reflect medical care personnel;
5. adopt detachable connection structure between face guard body and the 3D fretwork headgear, not only can satisfy the matching use and the change convenience of the face guard of different brands and specification, but also can select the 3D fretwork headgear of corresponding size according to different patient's head sizes.
Drawings
Fig. 1 is a schematic structural view of a mouth-opening prevention noninvasive ventilator mask of the present invention.
Detailed Description
The invention discloses an anti-mouth-opening noninvasive ventilator mask, as shown in figure 1, the mask also comprises a mask body 1, fixing belts 2 are respectively arranged at the upper side and the lower side of the mask body 1, the mask is different from the prior art in that the mask also comprises a 3D hollow head cover, the 3D hollow head cover comprises a pair of left and right cheek wrapping belts 3, a pair of left and right herringbone wrapping belts 4 and a mandible supporting belt 5, the left and right cheek wrapping belts 3 are arc-shaped and are respectively arranged at the two sides of the mask body 1 and are connected with the fixing belts 2 at the upper side and the lower side of the mask body 1 by adopting a detachable structure, the upper ends of the left and right cheek wrapping belts 3 are respectively provided with a forehead top extension belt 6 which can be extended to the forehead top of a wearer (namely a patient), the forehead top extension belt 6 is provided with matched magic tapes 7a, the left and right cheek wrapping belts 3 are mutually buckled and connected at the forehead top of the wearer by the forehead top extension belt 6, positioning the upper front part; the forked ends of the left herringbone wrapping belt 4 and the right herringbone wrapping belt 4 are respectively connected with the upper end and the lower end of the cheek wrapping belt 3 on the same side into a whole, the other ends of the cheek wrapping belts are provided with matched magic tapes 7b, the left herringbone wrapping belt 4 and the right herringbone wrapping belt 4 are mutually connected behind the brain of a wearer through the magic tapes 7b for rear positioning, and the space in the middle of the left herringbone wrapping belt 4 and the right herringbone wrapping belt 4 can be used for exposing the ears of a patient; two ends of the lower jaw supporting belt 5 are respectively connected to the connecting positions of the cheek wrapping belts 3 and the herringbone wrapping belts 4 on the same side and are integrated.
As an embodiment, the cheek wrapping band 3, the herringbone wrapping band 4 and the lower jaw supporting band 5 are all made of elastic breathable fabric, and of course, the inner surfaces of the cheek wrapping band 3, the herringbone wrapping band 4 and the lower jaw supporting band 5 may further have a skin-friendly fabric layer to ensure the comfort of wearing of the patient.
As an embodiment, the mandible supporting belt 5 is further provided with a pressure measuring strip 8, a control box 9 is further arranged at a connection position of the upper end of the cheek wrapping belt 3 and the herringbone wrapping belt 4 on the same side, and comprises a power supply battery (not shown in the figure), a switch button 10, a microprocessor (not shown in the figure), an LED display lamp 11 and a buzzer 12, the microprocessor receives mandible pressure signals detected by the pressure measuring strip 8 and sends corresponding signals to the LED display lamp 11 and the buzzer 12, and the switch button 10 controls the power supply of the power supply battery to be started and stopped.
This 3D fretwork headgear can design into a plurality of sizes according to children, man and woman's head size, through detachable construction such as "day word is buckled", can change face guard body 1 by easy to assemble.
The use method of the mouth-opening-preventing noninvasive ventilator mask comprises the following steps:
A. selecting a 3D hollow head cover with a corresponding size according to a wearer, and assembling the 3D hollow head cover and the mask body 1 together through a detachable structure;
B. the mask body 1 is worn by a wearer, the 3D hollow head cover is sleeved on the head of the patient, and the lower jaw of the wearer is wrapped by the lower jaw supporting belt 5;
C. after the mask is adjusted, the left cheek wrapping belt 3 and the right cheek wrapping belt 3 are mutually fixed by the magic tapes 7 of the left herringbone wrapping belt 4 and the right herringbone wrapping belt 4, and the whole mask is worn;
d: the switch button 10 of the control box is opened, the pressure measuring strip 8 monitors the pressure of the mandible of the wearer on the mandible supporting belt 5, the microprocessor records an initial pressure measuring value, and when the measured pressure is greater than the initial pressure measuring value or a set pressure value, the microprocessor sends corresponding signals to the LED display lamp 11 and the buzzer 12 to give an alarm when the wearer opens the mouth, so that medical staff are reminded of handling in time.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (6)
1. The utility model provides a prevent opening a mouthful noninvasive ventilator face guard, includes the face guard body, and the upper and lower both sides of face guard body are equipped with fixed band, its characterized in that respectively: the three-dimensional face mask comprises a mask body, and is characterized by further comprising a 3D hollowed-out headgear, wherein the 3D hollowed-out headgear comprises a pair of left and right cheek wrapping belts, a pair of left and right herringbone wrapping belts and a lower jaw supporting belt, the left and right cheek wrapping belts are respectively arranged on two sides of the mask body and are connected with fixing belts on the upper side and the lower side of the mask body in a detachable structure, forehead top extension belts are respectively arranged at the upper ends of the left and right cheek wrapping belts, matched magic tapes are arranged on the forehead top extension belts, and the left and right cheek wrapping belts are mutually connected to the forehead position of a wearer through the forehead top extension belts; the forked ends of the left herringbone wrapping belt and the right herringbone wrapping belt are respectively connected with the upper end and the lower end of the cheek wrapping belt on the same side into a whole, the other ends of the left herringbone wrapping belt and the right herringbone wrapping belt are provided with matched magic tapes, the left herringbone wrapping belt and the right herringbone wrapping belt are mutually connected behind the brain of a wearer through the magic tapes, and the two ends of the lower jaw supporting belt are respectively connected to the connecting positions of the cheek wrapping belt on the same side and the herringbone wrapping belt and form a whole.
2. A mouth-opening prevention noninvasive ventilator mask of claim 1 characterized in that: the cheek wrapping belt, the herringbone wrapping belt and the lower jaw supporting belt are all made of elastic breathable fabrics.
3. A mouth-opening prevention noninvasive ventilator mask of claim 2 characterized in that: the inner surfaces of the cheek wrapping band, the herringbone wrapping band and the lower jaw supporting band are also provided with a skin-friendly fabric layer.
4. A mouth-opening prevention noninvasive ventilator mask of claim 1 characterized in that: still be equipped with on the mandibular supporting band and survey the layering, a cheek parcel area upper end still is equipped with the control box with the junction in homonymy chevron shape parcel area including power supply battery, shift knob, microprocessor, LED display lamp and bee calling organ, and microprocessor receives the detected signal who surveys the layering and sends corresponding signal to LED display lamp and bee calling organ, and shift knob controls opening of power supply battery power supply and stops.
5. A method of using a mouth-opening prevention noninvasive ventilator mask as claimed in any one of claims 1 to 4, characterized by comprising the steps of:
A. selecting a 3D hollow head cover with a corresponding size according to a wearer, and assembling the 3D hollow head cover and the mask body together through a detachable structure;
B. the mask body is worn by a wearer, the 3D hollow head cover is sleeved on the head of the patient, and the lower jaw of the wearer is wrapped by the lower jaw supporting belt;
C. after the mask is adjusted, the left cheek wrapping belt, the right cheek wrapping belt, the left herringbone wrapping belt and the right herringbone wrapping belt are mutually buckled and fixed.
6. The method of using a mouth-gag noninvasive ventilator mask of claim 5, further comprising step D: and when the measured pressure is greater than the initial pressure measurement value or a set pressure value, the microprocessor sends corresponding signals to the LED display lamp and the buzzer so as to alarm the mouth opening of the wearer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011215481.XA CN112138255A (en) | 2020-11-04 | 2020-11-04 | Mouth-opening-preventing noninvasive ventilator mask and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011215481.XA CN112138255A (en) | 2020-11-04 | 2020-11-04 | Mouth-opening-preventing noninvasive ventilator mask and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112138255A true CN112138255A (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011215481.XA Pending CN112138255A (en) | 2020-11-04 | 2020-11-04 | Mouth-opening-preventing noninvasive ventilator mask and using method thereof |
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| CN (1) | CN112138255A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110220113A1 (en) * | 2010-03-05 | 2011-09-15 | Resmed Limited | Chin strap |
| US20120138063A1 (en) * | 2009-08-26 | 2012-06-07 | Resmed Ltd. | Mask system |
| CN205095214U (en) * | 2015-11-04 | 2016-03-23 | 北京大学第一医院 | Do not have to create and breathe face mask assembly |
| CN210991160U (en) * | 2019-04-12 | 2020-07-14 | 河北省沧州中西医结合医院 | Comfortable craniomaxillary fixing elastic bandage |
| CN214679609U (en) * | 2020-11-04 | 2021-11-12 | 上海市同济医院 | Mouth-opening-preventing noninvasive ventilator mask |
-
2020
- 2020-11-04 CN CN202011215481.XA patent/CN112138255A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120138063A1 (en) * | 2009-08-26 | 2012-06-07 | Resmed Ltd. | Mask system |
| US20110220113A1 (en) * | 2010-03-05 | 2011-09-15 | Resmed Limited | Chin strap |
| CN205095214U (en) * | 2015-11-04 | 2016-03-23 | 北京大学第一医院 | Do not have to create and breathe face mask assembly |
| CN210991160U (en) * | 2019-04-12 | 2020-07-14 | 河北省沧州中西医结合医院 | Comfortable craniomaxillary fixing elastic bandage |
| CN214679609U (en) * | 2020-11-04 | 2021-11-12 | 上海市同济医院 | Mouth-opening-preventing noninvasive ventilator mask |
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